ISO 11898-3-2006 PDF

Full title and description

Road vehicles — Controller area network (CAN) — Part 3: Low-speed, fault-tolerant, medium-dependent interface. Defines the low-speed, fault-tolerant physical-layer characteristics and related medium-dependent interface (MDI) and physical-medium-attachment (PMA) elements used for CAN networks in road vehicles, intended for transmission rates above 40 kbit/s up to 125 kbit/s.

Abstract

Specifies characteristics for interchange of digital information between vehicle electronic control units (ECUs) using the Controller Area Network (CAN) for low-speed, fault-tolerant applications. Covers parts of the physical layer (MDI, PMA), relevant physical-layer signalling and aspects of medium access that affect fault-tolerant behaviour in low-speed CAN systems.

General information

• Status: Published; version confirmed following systematic review (confirmed 2020).
• Publication date: June 2006 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.040.15 (Car informatics; on-board computer systems).
• Edition / version: Edition 1 (2006); includes Technical Corrigendum ISO 11898-3:2006/Cor 1:2006.
• Number of pages: 25.

Scope

This part of ISO 11898 defines the low-speed, fault-tolerant medium-dependent interface for CAN used in vehicle body and non-critical networks, covering signaling and attachment at transmission rates above 40 kbit/s up to 125 kbit/s. It describes the fault-tolerant behavior of low-speed CAN, the required physical-layer interfaces (MDI/PMA), and the parts of the physical-layer signalling and medium-access control that affect fault tolerance. It does not cover higher-layer protocols or parts of the OSI model that are outside the CAN physical-layer/fault-tolerance domain.

Key topics and requirements

• Low-speed, fault-tolerant physical-layer definitions for CAN (MDI and PMA).
• Signalling requirements and voltage/terminating arrangements appropriate for 40–125 kbit/s operation.
• Fault-tolerance behaviour and failure modes for single-wire/dual-wire low-speed CAN topologies.
• Requirements that affect medium access and timing relevant to fault-tolerant low-speed operation.
• Compatibility notes relative to earlier low-speed standards (e.g., ISO 11519-2) and corrective updates (Corrigendum 1:2006).

Typical use and users

Used by automotive system architects, ECU hardware designers, transceiver manufacturers, test and validation engineers, and standards/quality managers. Typical applications include body electronics, comfort systems, door and seat modules, lighting, sensors and actuators where low-speed, fault-tolerant communication is required rather than high-speed powertrain or safety-critical networks.

Related standards

Part of the ISO 11898 CAN family — commonly paired with ISO 11898-1 (data link layer and physical signalling), ISO 11898-2 (high-speed physical layer), ISO 11898-4 (time-triggered CAN) and other series parts and corrigenda. It superseded earlier low-speed CAN definitions such as ISO 11519-2. The ISO 11898 package and related part descriptions are documented by standards bodies and resellers for the full series.

Keywords

CAN, Controller Area Network, low-speed CAN, fault-tolerant, medium-dependent interface, physical layer, MDI, PMA, vehicle networks, ISO 11898-3, Corrigendum

FAQ

Q: What is this standard?

A: ISO 11898-3:2006 defines the low-speed, fault-tolerant medium-dependent interface and related physical-layer elements for Controller Area Network (CAN) systems in road vehicles.

Q: What does it cover?

A: It covers low-speed CAN physical-layer specifications (MDI and PMA), signalling and fault-tolerant behaviour for transmission rates above 40 kbit/s up to 125 kbit/s, and elements of medium access and signalling that affect fault tolerance.

Q: Who typically uses it?

A: Automotive ECU designers, transceiver manufacturers, test engineers, systems architects and anyone implementing or verifying low-speed, fault-tolerant CAN nodes and networks.

Q: Is it current or superseded?

A: ISO 11898-3:2006 (with Corrigendum 1:2006) remains the published edition; the ISO record shows the document was confirmed after systematic review (confirmation noted in 2020). Users should check national/adopted publications and corrigenda for any country-specific forewords or updates.

Q: Is it part of a series?

A: Yes — it is Part 3 of the ISO 11898 series (CAN). The series includes Part 1 (data link layer and physical signalling), Part 2 (high-speed physical layer), Part 4 (time-triggered communication) and other related parts and historical documents.

Q: What are the key keywords?

A: CAN, low-speed CAN, fault-tolerant, MDI, PMA, physical layer, ISO 11898-3, vehicle networks.